At least these are 7 we won't have top provide services for 7 Immigrants Die in Arizona Desert TUCSON, Ariz. (AP) â€” At least seven illegal immigrants have died since Thursday while crossing the U.S.-Mexican border southwest of Tucson in scorching heat, officials said. Law-enforcement officers and ambulance services scrambled to rescue at least 70 other border-crossers Friday and Saturday. At least eight have been hospitalized since Thursday, U.S. Border Patrol spokesman Ryan Scudder told the Arizona Daily Star. Ambulance crews set up a triage station to handle the dozens of dehydrated migrants found Friday and early Saturday. At the Mexican consulate in Tucson, employees worked at a frenzied pace, helping to identify victims, notify their families and care for survivors, even as more reports came in. Agents of the Border Patrol's emergency-response team were involved in additional rescue operations late Saturday. A suspected smuggler was arrested and in Border Patrol custody Saturday, Scudder said. It appeared he was apprehended separately from the rest of his group but was identified by other members as their smuggler. Dozens of immigrants died last year from heat exposure in the deserts of Southern California and Arizona, where they illegally crossed into the United States to avoid increased patrols in urban areas.